Precision Grading — Contractor Question

Precision Grade Control

Precision grade control is the stage where a reference system is commissioned for the intended surface. It needs design transfer and equipment checks before productive grading.

Before moving material

Confirm design revision, datum and the working-edge reference.

Receiving operation and checks

Verify surface results independently during and after the work. Record calibration and any reference interruptions.

Machine guidance is not acceptance certification.

What Verification Evidence Proves

Verification evidence should answer the acceptance question asked. Elevation measurements establish geometry; material records and relevant tests address layer condition. Neither should be silently substituted for the other.

Before moving material

Define the checks needed for the finished purpose.

Receiving operation and checks

Hand over accepted areas and clearly identify exceptions. Check that the evidence concerns the same layer and work zone.

An instrument display is not a complete acceptance record.

Precision Landforming

Precision landforming follows a designed surface rather than repeatedly smoothing whatever the operator sees. Its value lies in controlling where material is removed and placed relative to that surface.

Before moving material

Establish reliable survey control and a suitable design model.

Receiving operation and checks

Record the achieved surface before cultivation, compaction or construction. Check joins and breaklines where changes in slope are intentional.

Guidance accuracy alone does not prove the material or finished surface is suitable.

Record the job inputs

Use this checklist to turn the scenario into a specific brief. Retain the design revision and agree who accepts each completed layer.

• Existing condition, extent and the reason for intervention
• Required finished purpose, receiving operation and acceptance criteria
• Material type, layer role, source, receiving area and volume state
• Reference levels, datum, survey method and issued design revision
• Available tractor, implement configuration, travel route and turning space
• Checks before work, stopping points and evidence retained at handover

Checklist ticks apply only while this page is open. Include the completed brief in your project records.

Continue through the network

Surface and verification · Applications and rental · Equipment and technology